Battery cell, battery and vehicle having the same

Abstract

The present invention provides a battery cell and a battery and a vehicle having the same, wherein the battery cell comprises: a shell, wherein a receiving cavity is defined in the shell; and a plurality of battery cells, wherein the plurality of battery cells are arranged in the receiving cavity, and the plurality of battery cells are sequentially arranged along a first direction and sequentially connected in series; wherein the first direction is the thickness direction of the battery cells. According to the battery cell of the present invention, a plurality of battery cells are arranged in the shell, which can improve the energy density of a single battery cell, so that the battery cell can meet the use requirements and meet a variety of use conditions, thereby ensuring that the battery can meet a variety of use conditions, and at the same time, can ensure the energy transmission efficiency, thereby ensuring the overall voltage of the battery.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a battery monomer and a battery and a vehicle having the same. Background Art

[0002] If a battery pack wants to achieve high voltage, it can only be achieved by connecting multiple low-voltage battery cells in series. In the existing solution, when the battery cells are grouped, the outer shell will also occupy a certain space. Even if multiple battery cells are stacked, the energy density of the battery cannot be effectively improved, which will affect the use of the battery. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a battery cell that can meet a variety of usage conditions.

[0004] The present invention also provides a battery having the battery cell.

[0005] The present invention also provides a vehicle having the battery.

[0006] A battery cell according to an embodiment of the present invention comprises: a shell defining a housing cavity; a plurality of battery cells, the plurality of battery cells being disposed in the housing cavity, the plurality of battery cells being arranged in sequence along a first direction and connected in series in sequence; wherein the first direction is a thickness direction of the battery cells.

[0007] According to the battery cell of the present invention, a plurality of battery cells are arranged in a shell, which can improve the energy density of a single battery cell, so that the battery cell can meet the use requirements and meet various use conditions, thereby ensuring that the battery can meet various use conditions. At the same time, the energy transmission efficiency can be guaranteed, thereby ensuring the overall voltage of the battery.

[0008] According to some embodiments of the present invention, the battery cell includes: a connector, wherein the connector is electrically connected to two adjacent battery cells.

[0009] According to some optional embodiments of the present invention, the battery cell includes: a partition, which is arranged in the accommodating cavity and divides the accommodating cavity into a plurality of sub-cavities, each of which has one of the battery cells.

[0010] According to some optional embodiments of the present invention, the partition is provided with a through hole penetrating the partition along the first direction, and the connecting member passes through the through hole to be electrically connected to two adjacent battery cells.

[0011] According to some optional embodiments of the present invention, the battery cell includes: a sealing ring, which is sleeved on the connecting member to seal a gap between the connecting member and the through hole.

[0012] According to some embodiments of the present invention, the battery cell includes: an electrode body and a first conductive part, the first conductive part is connected to a first side of the electrode body in a second direction, and the connecting member is electrically connected to the first conductive part; wherein the second direction is the length or width direction of the battery cell.

[0013] According to some optional embodiments of the present invention, the battery cell further includes: a second conductive portion, which is connected to the second side of the electrode body in the second direction, and is used to electrically connect the connector or the pole of the battery cell.

[0014] According to some optional embodiments of the present invention, the first conductive part and / or the second conductive part comprises: a connecting piece and a pole ear, the pole ear is connected to the electrode body, and the adapter is connected between the pole ear and the connecting piece.

[0015] According to some optional embodiments of the present invention, the first conductive part and / or the second conductive part further includes: an insulating member, an insulating cavity is formed in the insulating member, the adapter is arranged in the insulating cavity, and the pole ear and the connecting member both extend into the insulating cavity and are connected to the adapter.

[0016] According to some optional embodiments of the present invention, the insulating member includes: a first plate and a second plate, wherein the second plate is detachably connected to the first plate and cooperates to define the insulating cavity.

[0017] According to some embodiments of the present invention, the electrode polarities of the first conductive parts of two adjacent battery cells are opposite.

[0018] According to some embodiments of the present invention, the battery cell includes: poles, which are arranged on both sides of the shell in the first direction, and the number of the poles is two, and the two poles are respectively electrically connected to two of the battery cells located at both ends of the multiple battery cells in the arrangement direction.

[0019] According to some embodiments of the present invention, the end battery cell includes: an electrode body, a first conductive part and a second conductive part, the first conductive part and the second conductive part are respectively connected on both sides of the electrode body in a second direction, the first conductive part is electrically connected to the adjacent battery cell, and the second conductive part is electrically connected to the pole; the second direction is the length direction of the battery cell.

[0020] According to some optional embodiments of the present invention, the first conductive part and the second conductive part both include: a pole ear and a adapter plate, the pole ear is connected between the electrode body and the adapter plate, wherein the first conductive part is connected to the adjacent battery cell through the adapter plate, and the second conductive part is connected to the pole through the adapter plate.

[0021] According to some embodiments of the present invention, both side surfaces of the shell in the first direction have recessed portions recessed toward the inside of the shell, the recessed portions form mounting holes penetrating the shell along the first direction, and the poles are inserted into the mounting holes.

[0022] According to some embodiments of the present invention, the housing includes: a first half shell and a second half shell, wherein the first half shell and the second half shell are butt-jointed in a thickness direction of the battery cell and define the accommodating cavity.

[0023] According to the second aspect of the present invention, the battery comprises: a plurality of battery cells according to the first aspect of the present invention, wherein the plurality of battery cells are arranged in sequence along a first direction and / or a second direction; a conductive member, wherein the conductive member is connected between two adjacent battery cells; the first direction is a thickness direction of the battery cells, and the second direction is a length or width direction of the battery cells.

[0024] According to the battery of the present invention, the battery cell of the first aspect of the present embodiment is provided, and multiple battery cells are provided in the housing, so that the energy density of a single battery cell can be improved, so that the battery cell can meet the use requirements and meet various use conditions, thereby ensuring that the battery can meet various use conditions, and at the same time, the energy transmission efficiency can be guaranteed, thereby ensuring the overall voltage of the battery. Furthermore, a conductive member is provided to connect multiple battery cells, so that electrical connection between multiple battery cells can be achieved, thereby ensuring the normal function of the battery.

[0025] A vehicle according to an embodiment of the third aspect of the present invention comprises a battery cell according to the first aspect of the present invention, or comprises a battery according to the second aspect of the present invention.

[0026] The vehicle according to the present invention is provided with the battery of the second aspect of the present embodiment, thereby ensuring the endurance of the vehicle and reducing the space occupied by the battery cells.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a battery cell at an angle according to an embodiment of the present invention;

[0029] Figure 2 yes Figure 1 An exploded view of a battery cell as described in;

[0030] Figure 3 yes Figure 1 A schematic diagram of another angle of the battery cell shown in ;

[0031] Figure 4 is along Figure 3 Sectional view along line AA;

[0032] Figure 5 yes Figure 2 An exploded view of the housing shown in ;

[0033] Figure 6 yes Figure 2 An exploded view of the connectors, insulators, separators and cells shown in FIG.

[0034] Figure 7 yes Figure 2 Exploded view of the pole, insulation, seal and support shown in .

[0035] Reference numerals:

[0036] 100. Battery cell;

[0037] 10. Shell; 11. First half shell; 12. Second half shell; 13. Accommodating cavity; 14. Concave portion; 15. Mounting hole; 16. Explosion-proof valve hole; 17. Liquid injection hole;

[0038] 20. battery cell; 21. electrode body; 22. first conductive part; 221. tab; 222. adapter; 23. second conductive part;

[0039] 30. partition; 31. through hole;

[0040] 40. Connecting piece; 41. First section; 42. Second section; 43. Connecting section;

[0041] 50. Sealing ring;

[0042] 60, pole; 61, first column; 62, second column; 63, connecting column;

[0043] 70, insulating member; 71, first plate; 712, clamping hole; 72, second plate; 721, clamping column; 73, connecting hole;

[0044] 81. Explosion-proof valve; 82. Sealing cover;

[0045] 91. Sealing member; 92. Supporting member. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0047] Please refer to the following Figure 1-7 A battery cell 100 according to an embodiment of the present invention is described.

[0048] Reference Figure 1 , Figure 2 ,and Figure 4 The battery cell 100 according to the embodiment of the present invention includes: a housing 10 and a plurality of battery cells 20 , that is, the battery cell 100 may include two, three, or four or more battery cells 20 .

[0049] Specifically, the housing 10 defines a housing cavity 13; a plurality of battery cells 20 are disposed in the housing cavity 13, and the plurality of battery cells 20 are sequentially arranged and sequentially connected in series along a first direction; wherein the first direction is a thickness direction of the battery cell 20 (eg, Figure 2 The left and right direction of the battery cell 20 shown).

[0050] The battery cell 100 of the present invention has a plurality of battery cells 20 arranged in a shell 10, and the plurality of battery cells 20 are connected in series in the shell 10. Compared with the solution in the prior art in which a single battery cell 20 is arranged in a battery cell 100, the battery cell 100 of the present application can improve the energy density of a single battery cell 100, so that the battery cell 100 can meet the use requirements, and further can ensure that the battery can meet a variety of use conditions. At the same time, when a plurality of battery cells 100 are connected in series to form a battery, under the condition of the same number of battery cells 20, the number of connection structures of the battery cells 100 can be reduced, thereby ensuring the energy transmission efficiency and further can ensure the overall voltage of the battery.

[0051] According to the battery cell 100 of the embodiment of the present invention, a plurality of battery cells 20 are arranged in the shell 10, which can improve the energy density of the single battery cell 100, so that the battery cell 100 can meet the use requirements and meet various use conditions, thereby ensuring that the battery can meet various use conditions. At the same time, it can ensure the energy transmission efficiency and thus ensure the overall voltage of the battery.

[0052] According to some embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 5The battery cell 100 includes a partition 30, which is disposed in the accommodating chamber 13 and divides the accommodating chamber 13 into a plurality of sub-chambers, that is, the partition 30 divides the accommodating chamber 13 into two, three, or four or more sub-chambers, each of which is provided with a battery cell 20. Thus, the partition 30 divides the accommodating chamber 13, so that adjacent battery cells 20 can be separated, so that adjacent battery cells 20 can be ensured not to affect each other, and therefore, short circuits of adjacent battery cells 20 can be avoided, thereby ensuring the safety of the battery cell 100.

[0053] For example, Figure 2 , Figure 3 and Figure 5 As shown, the partition 30 is disposed in the shell 10 , and the partition 30 divides the accommodating chamber 13 into two sub-cavities. The battery cell 100 includes two battery cells 20 , which are stacked in the left-right direction and are disposed on the left and right sides of the partition 30 .

[0054] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 6 The battery cell 100 may include: a connector 40, a separator 30 having a Figure 6 The through hole 31 that penetrates the partition 30 (in the left and right directions shown in the figure) passes through the partition 30, and the connector 40 passes through the through hole 31 to be electrically connected to two adjacent battery cells 20. Therefore, the through hole 31 can enable the connector 40 to connect the adjacent battery cells 20, so that it is convenient for the connector 40 to connect the adjacent battery cells 20. At the same time, the form of setting the through hole 31 to connect the adjacent battery cells 20 is simple and convenient for processing. In addition, only the connector 40 needs to be set to achieve the connection of the adjacent battery cells 20, and there is no need to set up an extra structure to connect the adjacent battery cells 20. Therefore, the energy transmission efficiency of the adjacent battery cells 100 can be guaranteed, and the production cost of the battery cells 100 can also be reduced.

[0055] For example, Figure 2 and Figure 6 As shown, the partition 30 is provided with a through hole 31 penetrating the partition 30 in the left-right direction, and the connector 40 is inserted in the through hole 31 . The left and right ends of the connector 40 are respectively connected to a battery cell 20 .

[0056] Furthermore, if Figure 2 and Figure 6 As shown, the connector 40 includes: a first section 41, a second section 42 and a connecting section 43, the first section 41 and the second section 42 are arranged at intervals along the left-right direction, the connecting section 43 is arranged between the first section 41 and the second section 42, and the two ends of the connecting section 43 are respectively connected to the first section 41 and the second section 42, the first section 41 is electrically connected to one battery cell 20, and the second section 42 is electrically connected to another adjacent battery cell 20. Therefore, the structure of the connector 40 is reasonably arranged, and it is convenient for the connector 40 to connect adjacent battery cells 20.

[0057] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 6 The battery cell 100 may include: a sealing ring 50, which is sleeved on the connector 40 to seal the gap between the connector 40 and the through hole 31. Thus, the sealing ring 50 can seal the adjacent sub-cavities, thereby preventing the electrolytes in the adjacent sub-cavities from flowing to each other and causing the battery cell 20 to short-circuit, thereby improving the safety of the battery cell 100.

[0058] For example, Figure 2 and Figure 6 As shown, the sealing ring 50 is circular, and the sealing ring 50 is arranged on the through hole 31, and the two ends of the sealing ring 50 abut against the left and right side surfaces of the partition 30, and the connecting section 43 of the connecting member 40 is passed through the through hole 31, and the first section 41 and the second section 42 of the connecting member 40 respectively abut against the two sides of the sealing ring 50. Preferably, the sealing ring 50 is made of elastic material, so that the sealing effect of the sealing ring 50 can be ensured.

[0059] According to some embodiments of the present invention, referring to Figure 2 and Figure 4 The battery cell 20 may include: an electrode body 21 and a first conductive portion 22, wherein the first conductive portion 22 is connected to a first side of the electrode body 21 in the second direction (eg, Figure 2 The rear side of the electrode body 21 shown in FIG. 1 is a diagram of a connection member 40 electrically connected to the first conductive portion 22; wherein the second direction is the length direction of the battery cell 20 (eg Figure 2 The front-to-back direction of the battery cell 20 shown in the figure) or the width direction (such as Figure 2 Thus, the electrode body 21 can store energy, and at the same time, the connector 40 can electrically connect adjacent electrode bodies 21 through the first conductive portion 22, so that each electrode body 21 can be charged and discharged normally.

[0060] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 4 The battery cell 20 may further include: a second conductive portion 23, the second conductive portion 23 is connected to the second side of the electrode body 21 in the second direction (such as Figure 2 The second conductive part 23 is arranged on the rear side of the electrode body 21 shown in the figure), and is used to electrically connect the connector 40 or the pole 60 of the battery cell 100. Therefore, the second conductive part 23 is arranged at a reasonable position, and will not affect the coordination between the first conductive part 22 and other structures. At the same time, the first conductive part 22 can be electrically connected to the connector 40, so that it can be connected in series with the adjacent electrode body 21. The second conductive part 23 can also be connected to the pole 60, so that the electrode body 21 can be charged and discharged through the pole 60.

[0061] For example, Figure 2 and Figure 4 As shown, the electrode body 21 extends in the front-to-back direction, the first conductive part 22 is arranged on the rear side of the electrode body 21, the first conductive part 22 is electrically connected to the connector 40, and the second conductive part 23 is arranged on the front side of the electrode body 21, the second conductive part 23 is electrically connected to the pole 60.

[0062] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 4 The first conductive part 22 and / or the second conductive part 23 includes: a transfer plate 222 and a pole ear 221 , the pole ear 221 is connected to the electrode body 21 , and the transfer plate 222 is connected between the pole ear 221 and the connecting member 40 .

[0063] In this way, the first conductive part 22 and / or the second conductive part 23 can lead the positive and negative electrodes of the electrode body 21 to both sides of the electrode body 21. Therefore, the electrode body 21 cooperates with the first conductive part 22 and the second conductive part 23 to ensure the normal function of the battery cell 20. In addition, the tab 221 serves as a connection point between the electrode body 21 and the external connection. The tab 221 enables current to flow into or out of the electrode body 21. The adapter 222 can provide a connection position for the pole 60, which facilitates the connection between the second conductive part 23 and the pole 60.

[0064] For example, Figure 2 , Figure 3 and Figure 4 As shown, the front and rear sides of the electrode body 21 are provided with pole ears 221, and the two pole ears 221 are respectively a positive pole ear 221 and a negative pole ear 221, and each pole ear 221 is electrically connected to the adapter 222. Preferably, the pole ears 221 and the adapter 222 are both made of aluminum, so that the conductive efficiency of the first conductive part 22 and the second conductive part 23 can be ensured, and the connecting member 40 is riveted to the pole ears 221, so that the connection reliability of the connecting member 40 and the pole ears 221 can be ensured.

[0065] According to some optional embodiments of the present invention, referring to Figure 2 , Figure 6 and Figure 7 The first conductive part 22 and / or the second conductive part 23 further includes: an insulating member 70, an insulating cavity is formed in the insulating member 70, a transfer plate 222 is arranged in the insulating cavity, and the tab 221 and the connecting member 40 are both extended into the insulating cavity and connected to the transfer plate 222.

[0066] Furthermore, if Figure 2 , Figure 6 and Figure 7As shown, the battery cell 100 may include: a plurality of insulating members 70, that is, the battery cell 100 may include two, three or four or more insulating members 70, and the plurality of insulating members 70 are arranged in the housing 10 and are respectively located at the electrode body 21 in the length direction (such as Figure 2 At both ends of the electrode body 21 in the front-to-back direction as shown, a plurality of insulating members 70 correspond one-to-one to a plurality of adapter plates 222.

[0067] In this way, the insulating member 70 can insulate the adapter plate 222 from other structures in the accommodating cavity 13, thereby preventing the structure in the accommodating cavity 13 from contacting and short-circuiting with the adapter plate 222, thereby ensuring the safe use of the battery cell 100. At the same time, each adapter plate 222 is arranged in the insulating cavity of the insulating member 70, thereby making each adapter plate insulated from other structures in the accommodating cavity 13, thereby ensuring that each adapter plate can be used normally.

[0068] For example, Figure 2 , Figure 6 and Figure 7 As shown, the battery cell 100 includes four insulating parts 70, and one battery cell 100 includes two battery cells 20. Each battery cell 20 is provided with a first conductive part 22 and a second conductive part 23. A transfer plate 222 is provided on the first conductive part 22 and the second conductive part 23. Therefore, one battery cell 100 is provided with four transfer plates 222 in total, and each transfer plate 222 is arranged in a corresponding insulating cavity.

[0069] According to some optional embodiments of the present invention, referring to Figure 2 , Figure 6 and Figure 7 The insulating member 70 is provided with a connecting hole 73, and both ends of the connecting member 40 (such as Figure 2 The left and right ends of the connecting member 40 shown in the figure extend into the two insulating members 70 respectively to connect with the adapter plates 222 of the two adjacent battery cells 20, so as to connect the two adjacent battery cells 20 in series. Therefore, the connecting hole 73 can facilitate the connection between the connecting member 40 and the adapter plate 222 in the insulating cavity, so that the adjacent battery cells 20 can be electrically connected. At the same time, the form of setting the connecting hole 73 on the insulating member 70 is simple in structure and convenient for processing, so as to improve production efficiency.

[0070] For example, Figure 2 , Figure 6 and Figure 7As shown, both left and right ends of the connector 40 are provided with insulating members 70, and a connecting hole 73 is provided on the right surface of the insulating member 70 on the left side of the connector 40, and a connecting hole 73 is provided on the left surface of the insulating member 70 on the right side of the connector 40, so that the first section 41 and the second section 42 of the connector 40 can be connected to the adapter 222 through the corresponding connecting holes 73 respectively. In addition, the adapter 222 is connected to the insulating member 70 by snapping, which can effectively prevent the adapter 222 from shaking in the insulating cavity. Preferably, the insulating member 70 is a plastic member, which can ensure the insulating effect of the insulating member 70.

[0071] According to some embodiments of the present invention, referring to Figure 2 , Figure 6 and Figure 7 The insulating member 70 includes: a first plate 71 and a second plate 72, the second plate 72 is detachably connected to the first plate 71, and cooperates to define an insulating cavity. Therefore, the insulating member 70 is set as a split member, so that the processing difficulty of the insulating member 70 can be reduced, and the production of the insulating member 70 is convenient. At the same time, the detachable connection between the first plate 71 and the second plate 72 is convenient for the maintenance and replacement of the insulating member 70, and can also facilitate the installation of the adapter 222 in the insulating cavity.

[0072] Furthermore, if Figure 2 , Figure 6 and Figure 7 As shown, the first plate 71 is provided with four clamping holes 712, and the second plate 72 is provided with four clamping columns 721. The clamping columns 721 correspond to the positions of the clamping holes 712. When the first plate 71 and the second plate 72 are connected, the clamping columns 721 are clamped into the corresponding clamping holes 712, thereby realizing the clamping connection between the first plate 71 and the second plate 72. In addition, the connecting hole 73 is provided on the second plate 72, and the connecting hole 73 penetrates the second plate 72 in the left-right direction.

[0073] According to some embodiments of the present invention, referring to Figure 2 and Figure 4 , the electrode polarities of the first conductive parts 22 of two adjacent battery cells 20 are opposite. Thus, it can be ensured that the adjacent battery cells 20 can be electrically connected normally, thereby ensuring that the battery cell 100 can operate normally.

[0074] According to some embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 4 The battery cell 100 includes: a pole 60, the pole 60 is arranged on the housing 10 in a first direction (such as Figure 2On both sides of the housing 10 (in the left and right directions as shown), there are two poles 60, and the two poles 60 are electrically connected to two battery cells 20 located at both ends of the multiple battery cells 20 in the arrangement direction. As a result, the poles 60 can facilitate the connection between the battery cell 100 and the adjacent battery cell 100, so that multiple battery cells 100 can be electrically connected. For example, adjacent battery cells 100 can be connected in series, and adjacent battery cells 100 can also be connected in parallel. At the same time, the provision of two poles 60 can enable both the positive and negative poles 60 of the battery cell 100 to extend to the outside of the housing 10 and connect to the adjacent battery cell 100, thereby ensuring the normal use of the battery cell 100.

[0075] For example, Figure 2 , Figure 3 and Figure 4 The pole 60 disposed on the left side is the positive pole 60 of the battery cell 100, and the pole 60 is made of aluminum. The pole 60 disposed on the right side is the negative pole 60 of the battery cell 100, and the pole 60 is made of copper.

[0076] According to some embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 4 The end cell 20 includes: an electrode body 21, a first conductive portion 22 and a second conductive portion 23, wherein the first conductive portion 22 and the second conductive portion 23 are respectively connected to both sides of the electrode body 21 in the second direction (such as Figure 2 The front and rear sides of the electrode body 21 shown in the figure), the first conductive portion 22 is electrically connected to the adjacent battery cell 20, and the second conductive portion 23 is electrically connected to the pole 60; the second direction is the length direction of the battery cell 20 (as shown in the figure). Figure 2 The front-to-rear direction of the battery cell 20 shown).

[0077] In this way, the end battery cell 20 can be electrically connected to the middle battery cell 20 through the first conductive part 22, so that the battery cells 20 inside the entire battery cell 100 can be connected in series. At the same time, the end battery cell 20 can be connected to the pole 60 through the second conductive part 23, so that the battery cell 100 can be charged and discharged normally.

[0078] According to some optional embodiments of the present invention, referring to Figure 2 , Figure 3 and Figure 4, the first conductive part 22 and the second conductive part 23 both include: a pole ear 221 and a transfer sheet 222, the pole ear 221 is connected between the electrode body 21 and the transfer sheet 222, wherein the first conductive part 22 is connected to the adjacent battery cell 20 through the transfer sheet 222, and the second conductive part 23 is connected to the pole 60 through the transfer sheet 222. Thus, it can be ensured that the first conductive part 22 and the second conductive part 23 can both be connected to the transfer sheet 222 through the pole ear 221, and then the first conductive part 22 and the second conductive part 23 can both be connected to the corresponding structure through the transfer sheet 222, so that the normal operation of the battery cell 100 can be ensured.

[0079] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 5 , the housing 10 is in a first direction (eg Figure 5 The two side surfaces on the left and right directions (shown in the figure) have a recessed portion 14 that is recessed toward the inside of the shell 10, and the recessed portion 14 is formed with a mounting hole 15 that penetrates the shell 10 in the first direction, and the pole 60 is inserted into the mounting hole 15. Therefore, the recessed portion 14 is recessed toward the inside of the shell 10, providing a mounting space for the pole 60, so that the arrangement of the pole 60 can be convenient. At the same time, the pole 60 is arranged in the recessed portion 14, which can prevent the pole 60 from being higher than the surface of the shell 10 in the thickness direction of the shell 10, thereby reducing the thickness of the battery cell 100 in the thickness direction, and further reducing the occupied space of the battery cell 100. When the space inside the battery is constant, the capacity of the battery cell 100 in the battery can be guaranteed to the maximum extent, so the energy density of the battery can be effectively guaranteed.

[0080] Furthermore, the mounting hole 15 is provided, so that the pole 60 can be inserted into the mounting hole 15, and at the same time, the pole 60 can pass through the mounting hole 15 to be connected to the battery cell 20 in the accommodating cavity 13, so that the positive or negative pole of the battery cell 20 can be led out to the outside of the shell 10, thereby facilitating the connection between the battery cell 100 and the adjacent battery cell 100.

[0081] For example, Figure 2 and Figure 5 As shown, the front end of the left side surface of the shell 10 is provided with a recessed portion 14 recessed to the right, and the front end of the right side surface of the shell 10 is provided with a recessed portion 14 recessed to the left, the left end of the left pole 60 is arranged in the recessed portion 14, and the right end of the left pole 60 passes through the mounting hole 15 to be connected to the battery cell 20, and the right end of the right pole 60 is arranged in the recessed portion 14, and the left end of the right pole 60 passes through the mounting hole 15 to be connected to the battery cell 20.

[0082] Furthermore, if Figure 2 , Figure 5 and Figure 7As shown, the pole 60 includes: a first column 61, a second column 62 and a connecting column 63, the first column 61 and the second column 62 are arranged at intervals in the left-right direction, the connecting column 63 is arranged between the first column 61 and the second column 62, the two ends of the connecting column 63 are respectively connected to the first column 61 and the second column 62, the first column 61 is arranged in the recessed portion 14, the connecting column 63 is penetrated in the mounting hole 15, and the second column 62 extends into the accommodating cavity 13 and is electrically connected to the battery cell 20. Therefore, the structure of the pole 60 is reasonably arranged, which can not only lead the positive and negative electrodes of the battery cell 20 to the outside of the housing 10, but also facilitate the connection between adjacent battery cells 100.

[0083] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 3 The battery cell 100 may further include: two poles 60, one end of each of which extends into the two insulating members 70 to be electrically connected to the adapters 222 of the two battery cells 20 at both ends of the arrangement direction. Thus, the battery cell 100 can be electrically connected to the adjacent battery cell 100 through the poles 60.

[0084] For example, Figure 2 and Figure 3 As shown, two poles 60 are arranged at the front end of the battery cell 100 and on the left and right sides of the battery cell 100. The right end of the left pole 60 extends into the left insulating member 70 and is electrically connected to the adapter plate 222. The right end of the right pole 60 extends into the right insulating member 70 and is electrically connected to the adapter plate 222.

[0085] According to some embodiments of the present invention, referring to Figure 2 and Figure 5 The housing 10 includes a first half shell 11 and a second half shell 12. The first half shell 11 and the second half shell 12 are arranged in a thickness direction of the battery cell 100 (eg Figure 5 The housing 10 is connected to the left and right sides of the housing 10 (shown in FIG. 1 ) and defines a receiving cavity 13. Thus, the housing 10 is provided as a split part, which can facilitate the installation of the battery cell 20 in the receiving cavity 13, thereby improving the assembly efficiency, and at the same time, can reduce the difficulty of processing the housing 10 and facilitate the processing of the housing 10.

[0086] For example, Figure 2 and Figure 5As shown, the first half shell 11 is a box body with an open right side, and the second half shell 12 is a box body with an open left side. The right edge of the first half shell 11 and the left edge of the second half shell 12 are connected to define a receiving chamber 13. The partition 30 is arranged between the first half shell 11 and the second half shell 12. The partition 30 cooperates with the first half shell 11 and the second half shell 12 to divide the receiving chamber 13 into two sub-cavities. Preferably, the partition 30 is welded to the first half shell 11 and the second half shell 12, so that the connection strength between the partition 30 and the first half shell 11 and the second half shell 12 can be ensured.

[0087] According to the battery of the second aspect of the present invention, Figure 1 , Figure 2 and Figure 3 , including multiple battery cells 100 and conductive members according to the first aspect of this embodiment, the multiple battery cells 100 are arranged in sequence along the first direction and / or the second direction; the conductive member is connected between two adjacent battery cells 100; the first direction is the thickness direction of the battery cell 100, and the second direction is the length or width direction of the battery cell 100.

[0088] According to the battery of the embodiment of the present invention, the battery cell 100 of the first aspect of the present embodiment is provided, and a plurality of battery cells 20 are provided in the housing 10, so that the energy density of a single battery cell 100 can be improved, so that the battery cell 100 can meet the use requirements and meet various use conditions, thereby ensuring that the battery can meet various use conditions, and at the same time, the energy transmission efficiency can be ensured, thereby ensuring the overall voltage of the battery. Furthermore, a conductive member is provided to connect the plurality of battery cells 100, so that the electrical connection between the plurality of battery cells 100 can be achieved, thereby ensuring the normal function of the battery.

[0089] According to the vehicle of the second embodiment of the present invention, Figure 1 , including the battery cell 100 of the first aspect of this embodiment, or including the battery of the second aspect of this embodiment.

[0090] The vehicle according to the embodiment of the present invention is provided with the battery according to the second aspect of the present embodiment, so that the cruising range of the vehicle can be ensured and the space occupied by the battery cell 100 can be reduced.

[0091] Reference below Figure 1-Figure 7 A vehicle according to the invention is described.

[0092] According to the vehicle of the embodiment of the present invention, a battery is arranged on the vehicle, and the battery includes a plurality of battery cells 100 and a conductive member, wherein the conductive member is arranged between adjacent battery cells 100, so that the plurality of battery cells 100 are electrically connected through the conductive member.

[0093] The battery cell 100 includes: a housing 10 , a battery cell 20 , a partition 30 , a connector 40 , a sealing ring 50 , a pole 60 , an insulating member 70 , an explosion-proof valve 81 , a sealing cover 82 , a sealing member 91 and a supporting member 92 .

[0094] Specifically, the shell 10 includes: a first half shell 11 and a second half shell 12, the first half shell 11 and the second half shell 12 are butt-jointed in the left-right direction, a receiving cavity 13 is defined in the first half shell 11 and the second half shell 12, a left side surface of the front end of the first half shell 11 is provided with a recessed portion 14 recessed to the right, a right side surface of the front end of the second half shell 12 is provided with a recessed portion 14 recessed to the left, a mounting hole 15 is provided on the recessed portion 14 penetrating along the left-right direction, an explosion-proof valve hole 16 and a liquid injection hole 17 are provided on the rear side surfaces of the first half shell 11 and the second half shell 12, an explosion-proof valve hole 16 and a liquid injection hole 17 are covered by an explosion-proof valve 81, and a sealing cover 82 covers the liquid injection hole 17.

[0095] The partition 30 is arranged between the first half shell 11 and the second half shell 12. The partition 30 cooperates with the first half shell 11 and the second half shell 12 to divide the accommodating chamber 13 into two sub-cavities arranged at intervals along the left-right direction. A through hole 31 is provided on the partition 30, and the through hole 31 penetrates the partition 30 along the left-right direction to connect the two adjacent sub-cavities.

[0096] There are two battery cells 20, and each sub-cavity has a battery cell 20. The battery cell 20 includes an electrode body 21, a first conductive part 22 and a second conductive part 23. The first conductive part 22 and the second conductive part 23 are arranged on the front and back sides of the electrode body 21. The conductive body includes a pole ear 221 and a converter 222. The pole ear 221 is electrically connected to the electrode body 21, and the converter 222 is electrically connected to the pole ear 221.

[0097] The insulating member 70 is arranged at the position of the first conductive part 22 and the second conductive part 23. There are four insulating members 70 in total, so that the adapters 222 of the first conductive parts 22 and the second conductive parts 23 of the two battery cells 20 are both in the insulating cavity of the insulating member 70. The insulating member 70 includes a first plate 71 and a second plate 72. The first plate 71 and the second plate 72 are arranged at intervals along the left-right direction. An insulating cavity is defined between the first plate 71 and the second plate 72. The pole ear 221 extends into the insulating cavity. The adapter 222 is arranged in the insulating cavity. The second plate 72 is provided with a connecting hole 73, and the connecting hole 73 penetrates the second plate 72 along the left-right direction. The first plate 71 is provided with four clamping holes 712, and the second plate 72 is provided with four clamping columns 721. The positions of the clamping columns 721 and the clamping holes 712 correspond one by one. The second plate 72 is also provided with a connecting hole 73, and the connecting hole 73 penetrates the second plate 72 along the left-right direction.

[0098] The connector 40 is disposed on the rear side of the two battery cells 20, and the connector 40 includes a first section 41, a second section 42 and a connecting section 43. The first section 41 and the second section 42 are arranged at intervals in the left-right direction. A connecting section 43 is provided between the first section 41 and the second section 42, and the connecting section 43 electrically connects the first section 41 and the second section 42. The first section 41 extends into the connecting hole 73 of the insulating member 70 on the left side and is electrically connected to the adapter plate 222 of the battery cell 20 on the left side. The second section 42 extends into the connecting hole 73 of the insulating member 70 on the right side and is electrically connected to the adapter plate 222 of the battery cell 20 on the right side. The connecting section 43 is penetrated in the through hole 31, and a sealing ring 50 is provided between the connecting section 43 and the through hole 31. The sealing ring 50 seals the connector 40 and the through hole 31.

[0099] Two poles 60 are provided, and the two poles 60 are arranged on the front side of the battery cell 100 and are arranged at intervals along the left-right direction. The pole 60 includes a first column 61, a second column 62 and a connecting column 63. The first column 61 and the second column 62 are arranged at intervals along the left-right direction. A connecting column 63 is provided between the first column 61 and the second column 62, and the connecting column 63 electrically connects the first column 61 and the second column 62.

[0100] The first column 61 of the pole 60 on the left side of the battery cell 100 extends into the mounting hole 15 of the first half shell 11 and is electrically connected to the adapter plate 222 on the front side of the battery cell 20 on the left side, and the connecting column 63 of the pole 60 is penetrated in the mounting hole 15, and the second column 62 of the pole 60 passes through the mounting hole 15 of the first half shell 11 and is exposed from the shell 10. The first column 61 of the pole 60 on the right side of the battery cell 100 extends into the mounting hole 15 of the second half shell 12 and is electrically connected to the adapter plate 222 on the front side of the battery cell 20 on the right side, and the connecting column 63 of the pole 60 is penetrated in the mounting hole 15, and the second column 62 of the pole 60 passes through the mounting hole 15 of the second half shell 12 and is exposed from the shell 10.

[0101] A support member 92 is provided between the housing 10 and the second column 62 of the pole 60, a support hole is provided in the support member 92, the second column 62 is embedded in the support hole, and a seal 91 is provided between the connecting column 63 of the pole 60 and the mounting hole 15. Preferably, the support member 92 is a plastic member, which can reduce the weight of the battery cell 100, and the seal 91 is an elastic material, which can ensure the sealing effect.

[0102] When assembling the battery cell 100, firstly arrange the two battery cells 20 on the left and right sides of the partition 30, and then arrange the four insulating members 70 on the corresponding conductive parts 22 respectively, and then firstly sleeve the sealing ring 50 on the connecting section 43 of the connecting member 40, and then pass the connecting section 43 of the connecting member 40 into the through hole 31, and then electrically connect the first section 41 of the connecting member 40 with the adapter plate 222 of the battery cell 20 on the left, and then electrically connect the second section 42 of the connecting member 40 with the adapter plate 222 of the battery cell 20 on the right, and then respectively connect the two poles 60 to the front sides of the two battery cells 20. It should be noted that the pole 60 on the left should be electrically connected to the adapter plate 222 of the battery cell 20 on the left, and the pole 60 on the right should be electrically connected to the adapter plate 222 of the battery cell 20 on the right, and then Splice the first half shell 11 and the second half shell 12 on the left and right sides of the partition 30, and seal them with the partition 30. Note that the left pole 60 passes through the mounting hole 15 to expose from the first half shell 11, and the right pole 60 passes through the mounting hole 15 to expose from the second half shell 12. Then, set a support member 92 between the left pole 60 and the first half shell 11, and install a seal 91 between the left pole 60 and the mounting hole 15 of the first half shell 11. Set a support member 92 between the right pole 60 and the second half shell 12, and install a seal 91 between the right pole 60 and the mounting hole 15 of the second half shell 12. Finally, the explosion-proof valve 81 is sealed on the explosion-proof valve hole 16, and the sealing cover 82 is sealed on the injection hole 17. At this time, the assembly of the battery cell 100 is completed.

[0103] When assembling the battery, the multiple battery cells 100 are arranged at intervals in the left-right direction, and the conductive members are connected to the poles 60 of the adjacent battery cells 100 to realize the series connection of the multiple battery cells 100 .

[0104] The battery of this embodiment is provided with the battery cell 100 of the first aspect of the embodiment described above, and multiple battery cells 20 are provided in the housing 10, which can improve the energy density of a single battery cell 100, so that the battery cell 100 can meet the use requirements and meet various use conditions, thereby ensuring that the battery can meet various use conditions, and at the same time, the energy transmission efficiency can be ensured, thereby ensuring the overall voltage of the battery. Furthermore, a conductive member is provided to connect multiple battery cells 100, thereby achieving electrical connection between multiple battery cells 100, thereby ensuring the normal function of the battery.

[0105] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0106] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0107] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0109] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cell (100), characterized in that: include: A housing (10), wherein a receiving chamber (13) is defined in the housing (10); A plurality of battery cells (20), wherein the plurality of battery cells (20) are arranged in the accommodating cavity (13), and the plurality of battery cells (20) are arranged along a first direction and sequentially connected in series therein, wherein the first direction is a thickness direction of the battery cells (20); The housing (10) comprises: a first half shell (11) and a second half shell (12), the side surfaces of the first half shell (11) and the second half shell (12) are both provided with a liquid injection hole (17), the battery cell (100) comprises a sealing cover (82), the sealing cover (82) covers the liquid injection hole (17), the side surfaces of the first half shell (11) and the second half shell (12) are both provided with an explosion-proof valve hole (16), the battery cell (100) comprises an explosion-proof valve (81), the explosion-proof valve (81) covers the explosion-proof valve hole (16); A pole (60), the pole (60) being arranged on both sides of the shell (10) in the first direction, the number of the poles (60) being two, the two poles (60) being respectively suitable for being electrically connected to two end cells at both ends of the plurality of cells (20) in the arrangement direction, the pole (60) and the explosion-proof valve (81) being respectively arranged at both ends of the shell (10) in the length direction; The housing (10) has a recessed portion (14) recessed toward the inside of the housing (10) on both side surfaces in the first direction, the recessed portion (14) is formed with a mounting hole (15) penetrating the housing (10) along the first direction of the housing (10), and the pole (60) is inserted into the mounting hole (15); A connecting member (40), the connecting member (40) being electrically connected to two adjacent battery cells (20) so as to connect the two adjacent battery cells (20) in series; The battery cell (20) comprises: an electrode body (21) and a first conductive portion (22), wherein the first conductive portion (22) is connected to a first side of the electrode body (21) in a second direction, and the second direction is a length direction of the battery cell (20); The battery cell (20) further comprises: a second conductive portion (23), the second conductive portion (23) being connected to a second side of the electrode body (21) in the second direction; The first conductive part (22) and / or the second conductive part (23) further comprises: an insulating member (70), wherein an insulating cavity is formed in the insulating member (70); The insulating member (70) comprises a first plate (71) and a second plate (72), wherein the second plate (72) is detachably connected to the first plate (71) and cooperates to define the insulating cavity.

2. The battery cell (100) according to claim 1, characterized in that: include: A partition (30), wherein the partition (30) is at least partially disposed in the accommodating cavity (13) and divides the accommodating cavity (13) into a plurality of sub-cavities, each of the sub-cavities being suitable for accommodating one of the battery cells (20).

3. The battery cell (100) according to claim 2, characterized in that: The partition (30) is provided with a through hole (31) penetrating the partition (30) along the first direction, and the connecting member (40) passes through the through hole (31) to be electrically connected to two adjacent battery cells (20).

4. The battery cell (100) according to claim 3, characterized in that: include: A sealing ring (50) is sleeved on the connecting member (40) to seal between the connecting member (40) and the through hole (31).

5. The battery cell (100) according to claim 1, characterized in that: The connecting member (40) is electrically connected to the first conductive part (22).

6. The battery cell (100) according to claim 5, characterized in that: The second conductive portion (23) is used to electrically connect the connector (40) or the pole (60) of the battery cell (100).

7. The battery cell (100) according to claim 6, characterized in that: The first conductive part (22) and / or the second conductive part (23) comprises: a transfer plate (222) and a pole ear (221), wherein the pole ear (221) is connected to the electrode body (21), and the transfer plate (222) is connected between the pole ear (221) and the connecting member (40).

8. The battery cell (100) according to claim 7, characterized in that: The adapter plate (222) is arranged in the insulating cavity, and the pole ear (221) and the connecting piece (40) both extend into the insulating cavity and are connected to the adapter plate (222).

9. The battery cell (100) according to claim 1, characterized in that: The electrode polarities of the first conductive parts (22) of two adjacent battery cells (20) are opposite.

10. The battery cell (100) according to claim 1, characterized in that: The end battery cell comprises: an electrode body (21), a first conductive part (22) and a second conductive part (23), wherein the first conductive part (22) and the second conductive part (23) are respectively connected to two sides of the electrode body (21) in a second direction, the first conductive part (22) is electrically connected to the adjacent battery cell (20), and the second conductive part (23) is electrically connected to the pole (60).

11. The battery cell (100) according to claim 10, characterized in that: The first conductive part (22) and the second conductive part (23) both comprise: a pole ear (221) and a transfer sheet (222), wherein the pole ear (221) is connected between the electrode body (21) and the transfer sheet (222), The first conductive part (22) is connected to the adjacent battery cell (20) via the adapter sheet (222), and the second conductive part (23) is connected to the pole (60) via the adapter sheet (222).

12. The battery cell (100) according to any one of claims 1 to 9, characterized in that: The first half shell (11) and the second half shell (12) are butt-jointed in the first direction and define the accommodating cavity (13).

13. A battery, characterized in that: include: A plurality of battery cells (100) according to any one of claims 1 to 12, wherein the plurality of battery cells (100) are arranged in sequence along a first direction and / or a second direction; A conductive member, the conductive member being connected between two adjacent battery cells (100); The first direction is the thickness direction of the battery cell (100), and the second direction is the length direction of the battery cell (100).

14. A vehicle, characterized in that: The method comprises a battery cell (100) according to any one of claims 1 to 12, or comprises a battery according to claim 13.

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